Trucks battery won't stay charged over night..

Asked by Jan 22, 2016 at 09:19 PM about the 1999 Dodge Ram 1500 4 Dr Laramie SLT 4WD Extended Cab SB

Question type: Maintenance & Repair

My 99 Dodge Ram 1500 5.9 V8 4x4 won't stay
charged when left for more than at least 12 hours
over night. Had AAA mechanic come out and put 2
new batteries in it and test; starter, battery,
alternator which all is good. He checked a couple of
things like all fuses in box and my stereo to see if
power was being pulled but nothing.. I've tried
driving it after new battery was put into it and it
starts and runs. When I turn it off you can hear a
buzzing or humming sound coming from around the
engine compartment but can't seem to find where
noise is coming from.. When I did drive it to work I
noticed that and when I got off the battery was
completely dead it wouldn't even jump start.
Mechanic said could be a short in the wiring
somewhere but that could be anywhere and take a
shop time and a lot of money to find and fix..Can
anyone help if any ideas what exactly it could be if it
could be a simple fix, please???

1 Answer

88,905

Before you can do any testing the battery needs to be fully recharged, so disconnect 1 battery cable and recharge the battery, next make sure everything is turned off, then just reconnect for a few seconds, then disconnect a cable and put a test light in between the battery post and cable terminal end, if the light turns on then you have a major battery draw, so the first thing to electrically disconnect is the alternator, if the light goes out then you have found your problem, if not then start removing the fuses one at a time, noting where each fuse goes, keep removing fuses until the light goes out, then find out what is on that fuse and trace down the problem componet or wiring and repair or replace, then start putting the fuses back in one at a time just make sure you didn't miss anything and finally reconnect the alternator, if the light stays off then your battery drain is fixed. Note: on some vehicles. They have a parasitic draw this will make the test light glow very dim that light is normal as long as it is just a glow. HTH

Your Answer

Add photo

Related Questions

  • truck wont stay running 84 answers

    I have a 2001 dodge 1500 pickup. The truck fires right up but will not stay running unless I keep my foot on the gas. As soon as I let off the throttle it dies instantly without sputtering. Gauges rea...

    2001 Dodge Ram 1500

    -

    Maintenance & Repair

  • 1999 ram 1500 sport wont hold a charge 1 answer

    my battery died one night so i cleaned all conections made shur they were all tight and had the battery and altanator chked and they chked out good and if i let the truck sit for about 12 hrs the ba...

    1999 Dodge Ram 1500 4 Dr ST 4WD Extended Cab SB

    -

    Maintenance & Repair

  • Truck won't idle 4 answers

    Just started last night... My 2002 Dodge Ram stalled and will only fire up when you step on the throttle... The minute you let off the throttle it stalls again... It has a new Camshaft sensor in it...

    2002 Dodge Ram 1500 SLT SB

    -

    Maintenance & Repair

  • I have a 2015 2500 6.4 engine that won't start. I have lights but won't start 25 answers

    Truck won't start, turn key and have lights but engine won't start!

    Dodge Ram 1500

    -

    Maintenance & Repair

  • Car keeps killing battery 1 answer

    My dodge intrepid 2.7 keeps killing the battery, I have replaced the alternator, battery, and tcm fuse.. it seems to be when the car starts to warm up. When it starts the radio starts to flicker ...

    2003 Dodge Intrepid SE

    -

    Maintenance & Repair

Search Dodge Ram 1500 Questions

Dodge Ram 1500 Experts

#1 Dan Connell
Dan Connell
Reputation 5,880
#2 pudgybear
pudgybear
Reputation 5,540
#3 dandyoun
dandyoun
Reputation 5,100
View All

Related Models For Sale

Used Ford F-150
2,439 Great Deals out of 210,728 listings starting at $895
Used Chevrolet Silverado 1500
1,977 Great Deals out of 159,962 listings starting at $1,995
Used Dodge Ram 2500
140 Great Deals out of 5,288 listings starting at $2,500
Used GMC Sierra 1500
873 Great Deals out of 64,532 listings starting at $1,500
Used Toyota Tundra
506 Great Deals out of 32,271 listings starting at $2,995
Used Toyota Tacoma
525 Great Deals out of 37,789 listings starting at $2,900
Used Ford F-250 Super Duty
390 Great Deals out of 47,792 listings starting at $400
Used Dodge Dakota
104 Great Deals out of 3,906 listings starting at $1,500
Used Ford Mustang
336 Great Deals out of 45,809 listings starting at $2,000
Used Dodge Ram 3500
83 Great Deals out of 2,179 listings starting at $5,950
Used Jeep Grand Cherokee
800 Great Deals out of 70,054 listings starting at $995

Used Cars For Sale

2010 Dodge Ram 1500 For Sale
69 Great Deals out of 1,353 listings starting at $6,500
2009 Dodge Ram 1500 For Sale
30 Great Deals out of 1,026 listings starting at $6,495
2008 Dodge Ram 1500 For Sale
67 Great Deals out of 1,582 listings starting at $2,999
2007 Dodge Ram 1500 For Sale
61 Great Deals out of 1,499 listings starting at $2,526
2006 Dodge Ram 1500 For Sale
73 Great Deals out of 1,361 listings starting at $2,195